AMD Radeon RX 6650M XT vs NVIDIA GeForce GT 640M Mac Edition

VS

AMD Radeon RX 6650M XT

NVIDIA GeForce GT 640M Mac Edition

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 6650M XT and 512MB VRAM GeForce GT 640M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6650M XT 's Advantages

Released 8 years and 11 months late

Boost Clock2416MHz

More VRAM (8GB vs 512GB)

Larger VRAM bandwidth (256.0GB/s vs 40.00GB/s)

1664 additional rendering cores

NVIDIA GeForce GT 640M Mac Edition 's Advantages

Lower TDP (32W vs 120W)

Score

Benchmark

FP32 (float)

Radeon RX 6650M XT +1630%

9.896 TFLOPS

GeForce GT 640M Mac Edition

0.572 TFLOPS

Radeon RX 6650M XT

VS

GeForce GT 640M Mac Edition

Graphics Card

Jan 2022

Release Date

Feb 2013

Mobility Radeon

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

2068 MHz

Base Clock

-

2416 MHz

Boost Clock

-

2000 MHz

Memory Clock

1250 MHz

Memory

8GB

Memory Size

512MB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

64bit

256.0GB/s

Bandwidth

40.00GB/s

Render Config

32

Compute Units

-

2048

Shading Units

384

128

TMUs

32

64

ROPs

8

-

32

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

2 MB

L2 Cache

128 KB

32 MB

L3 Cache

-

Theoretical Performance

154.6 GPixel/s

Pixel Rate

5.960 GPixel/s

309.2 GTexel/s

Texture Rate

23.84 GTexel/s

19.79 TFLOPS

FP16 (half)

-

9.896 TFLOPS

FP32 (float)

572.2 GFLOPS

618.5 GFLOPS

FP64 (double)

23.84 GFLOPS

Board Design

120W

TDP

32W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Navi 23

GPU Name

GK107

-

GPU Variant

N13P-GS

RDNA 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

11.06 billion

Transistors

1.27 billion

237 mm²

Die Size

118 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.3

Vulkan

1.1

-

CUDA

3.0

6.5

Shader Model

5.1

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